How many valence electrons should you use to draw a Lewis structure of carbon dioxide (CO2)

Which statement about velocity is true? A. It has only magnitude. B. It has only direction. C. It has magnitude and direction. D. It is a scalar quantity.

A metallurgist begins with 1,250 grams of vanadinite (Pb5 (VO4) 3Cl) and ends up with 135 grams of pure vanadium and 915 grams of pure lead. The percent composition of vanadium in the ore is, and the percent composition of lead is

How many number of each element 3Fe+4H20

The circle on the map below represents the area where and air mass formed over Canada. Which characteristic best describes this air mass? A) Warm and dry B) Warm and moist C) Cold and dry D) Cold and moist

Titan is bigger than mercury. true or false.

The measure of the force with which air molecules push on a surface that a called

Which property of CNG is used to fill it in cylinders?

How many milliliters of 2.55 m naoh is needed to make 125 ml of 0.75 m naoh solution?

Describe the scientific method and it's four steps.

Why can a magnet separate iron and sulphur in a mixture but not a compound?